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+5V Single-Supply, 1Msps, 14-Bit Self-Calibrating ADC

Low-Noise and Distortion (80dB SNR @ 500ksps) 14-Bit 1Msps ADC

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 1
Conv. Rate (ksps) (max) 1000
Data Bus µP/14
Diff/S.E. Input Both
External VREF (V) (min) 4.096
External VREF (V) (max) 4.5
Bipolar VIN (±V) (max) 2.048
INL (±LSB) 1.2
Package/Pins MQFP/44
Budgetary
Price (See Notes)
15.6
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Simplified Block Diagram

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 1
Conv. Rate (ksps) (max) 1000
Data Bus µP/14
Diff/S.E. Input Both
External VREF (V) (min) 4.096
External VREF (V) (max) 4.5
Bipolar VIN (±V) (max) 2.048
INL (±LSB) 1.2
Package/Pins MQFP/44
Budgetary
Price (See Notes)
15.6

Key Features

  • Monolithic, 14-Bit, 1Msps ADC
  • +5V Single Supply
  • SNR of 80dB for fIN = 500kHz
  • SFDR of 87dB for fIN = 500kHz
  • Low Power Dissipation: 257mW
  • On-Demand Self-Calibration
  • Differential Nonlinearity Error: ±0.3LSB
  • Integral Nonlinearity Error: ±1.2LSB
  • Three-State, Two's Complement Output Data

Applications/Uses

  • Communication Systems
  • Data Acquisition
  • Imaging
  • Medical
  • Scanners

Description

The MAX1205 is a 14-bit, monolithic, analog-to-digital converter (ADC) capable of conversion rates up to 1Msps. This integrated circuit, built on a CMOS process, uses a fully differential, pipelined architecture with digital error correction and a short self-calibration procedure that corrects for capacitor and gain mismatches and ensures 14-bit linearity at full sample rates. An on-chip track/hold (T/H) maintains superb dynamic performance up to the Nyquist frequency. The MAX1205 operates from a single +5V supply.

The fully differential inputs allow an input swing of ±VREF. The reference is also differential, with the positive reference (RFPF) typically connected to +4.096V and the negative reference (RFNF) connected to analog ground. Additional sensing pins (RFPS, RFNS) are provided to compensate for any resistive-divider action that may occur due to finite internal and external resistances in the reference traces and the on-chip resistance of the reference pins. A single-ended input is also possible using two operational amplifiers.

The power dissipation is typically 257mW at +5V, at a sampling rate of 1Msps. The device employs a CMOS-compatible, 14-bit parallel, two's complement output data format. For higher sampling rates, the MAX1201 is a 2.2Msps pin-compatible upgrade to the MAX1205.

The MAX1205 is available in an MQFP package, and operates over the commercial (0°C to +70°C) and the extended (-40°C to +85°C) temperature ranges.

Simplified Block Diagram

MAX1205: Pin Configuration MAX1205: Pin Configuration Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .